In recent years, and became noticeable interference in a household outlet, requiring protection home electronic equipment TVs, home audio, computers. These impairments lead to “tearing” of the image on the screens, heard the clicks and POPs from the speakers, “sboyat” digital devices. It is especially annoying when this happens while recording any programs.
VARIABLE RESISTORS WITH TAPS
often need Amateurs with a passion for designing low-frequency amplifiers. But in the sale they are not always. The solution? To make a simple potentiometer with taps. For this it is necessary to remove the cover and remove the axle with the slider. Then with an awl to puncture the plastic covering the hole in Read more…
If during the day to measure the mains voltage, the voltmeter each time will be different. This is due to you can enable or disable individual power consumers, changing mode of operation (in accordance with the work schedule of production, process flow, etc.), that is, change the values of loads that cause instability of voltage in the networks.
The proposed device is designed for “soft” on various radio and electrical household AC voltage of 220 V it is Known that the moment of switching devices containing a primary or secondary power circuits the capacitors of large capacity (high power audio amplifiers, switching power supplies and other devices), accompanied by a cast of current, which can reach tens of amperes.
Designed and made by me lighting device externally, and by construction, some nodes resembles the flashing beacons of special machines. But the purpose of it almost the opposite — creating a smooth bright light, and at low power lamps — at a considerable distance. Well, since the scope of the devices are different and their structures are substantial, but rather fundamental differences.
Remember, what is the simplest electrical circuit? The galvanic battery and light bulb connected by conductors through the switch (see the article “Ohm’s law” in the “M-K” N2 9, 1978). If such a circuit connection line length of about 30 cm to bring a compass, its magnetic needle will tend to become perpendicular to the conductor (Fig. 1).
More than two years have passed since then, as I have installed it on your motorcycle “IZH-Jupiter 4” contactless ignition on the basis of voskhodovskogo generator, switch 262 3734 and a homemade diode mixer (Fig. 1.). Making sure the reliable working of my creations, and colleagues conducted such an improvement to your motorcycles However there were questions like, “I drew on your chart — explain why me doesn’t work.”
With the approach of the New year interest in the “automation tree” increases dramatically. Everyone wants to decorate a beautiful Christmas tree with garlands of “live” light-driven commands to the electronic devices. One of them is the device to create the effect “running fire” — we tell today.
The inclusion of transformers on 400 Hz network, 220 V(50 Hz) using a ballast capacitor. If you look at the merits in diversity of industrial and self-made Amateur radio power supplies, it suggests the surprising conclusion. Basically they use the same (from a large item being sold) step-down transformers.
So, you are already familiar with the electromagnet, knows how to work the buzzer and electric bell (see “M-K” No. 8 this year). But there is a large group of Electromechanical devices, the main element of which is also an electromagnet. It’s the solenoid. That’s how they are.